| Southborough to Princeton (Florida) | 4,469.17 mi (7,192.43 km) |
| Southborough to Princeton (New Jersey) | 3,527.50 mi (5,676.96 km) |
| Southborough to Princeton (Texas) | 4,741.96 mi (7,631.45 km) |
| Southborough to Princeton Meadows (New Jersey) | 3,524.16 mi (5,671.59 km) |
| Southborough to Prineville (Oregon) | 4,962.48 mi (7,986.34 km) |
| Southborough to Prior Lake (Minnesota) | 4,056.79 mi (6,528.77 km) |
| Southborough to Progress (Pennsylvania) | 3,619.01 mi (5,824.23 km) |
| Southborough to Prospect Heights (Illinois) | 3,974.67 mi (6,396.62 km) |
| Southborough to Prosper (Texas) | 4,750.55 mi (7,645.27 km) |
| Southborough to Providence (Rhode Island) | 3,331.72 mi (5,361.88 km) |
| Southborough to Provo (Utah) | 4,909.72 mi (7,901.43 km) |
| Southborough to Prunedale (California) | 5,416.64 mi (8,717.24 km) |
| Southborough to Pueblo (Colorado) | 4,777.41 mi (7,688.51 km) |
| Southborough to Pueblo West (Colorado) | 4,777.38 mi (7,688.44 km) |
| Southborough to Pullman (Washington) | 4,721.66 mi (7,598.78 km) |
